A challenge coin is typically a medallion or a small coin that bears an organisation’s emblem, which is usually the military. Many stories have emerged to attempt to explain its origins, but the most common one is that it came from World War I. It i

The Laser Barcode Scanner is among the most common type of Barcode Scanner, which does not need to be in contact with a barcode to decipher the code. A standard laser scanner can be able to detect a barcode from six inches to 24 inches away, and a lo